diff --git a/src/slic3r/GUI/DeviceManager.cpp b/src/slic3r/GUI/DeviceManager.cpp
index addf5771b6..fe34507b23 100644
--- a/src/slic3r/GUI/DeviceManager.cpp
+++ b/src/slic3r/GUI/DeviceManager.cpp
@@ -585,7 +585,6 @@ MachineObject::MachineObject(NetworkAgent* agent, std::string name, std::string
     is_ams_need_update = false;
     ams_insert_flag = false;
     ams_power_on_flag = false;
-    ams_support_use_ams = false;
     ams_calibrate_remain_flag = false;
     ams_humidity = 5;
 
@@ -3919,7 +3918,6 @@ int MachineObject::parse_json(std::string payload, bool key_field_only)
                                 }
                                 if (jj["ams"].contains("tray_reading_bits")) {
                                     tray_reading_bits = stol(jj["ams"]["tray_reading_bits"].get<std::string>(), nullptr, 16);
-                                    ams_support_use_ams = true;
                                 }
                                 if (jj["ams"].contains("tray_is_bbl_bits")) {
                                     tray_is_bbl_bits = stol(jj["ams"]["tray_is_bbl_bits"].get<std::string>(), nullptr, 16);
diff --git a/src/slic3r/GUI/DeviceManager.hpp b/src/slic3r/GUI/DeviceManager.hpp
index cd51613622..9b50eb040c 100644
--- a/src/slic3r/GUI/DeviceManager.hpp
+++ b/src/slic3r/GUI/DeviceManager.hpp
@@ -530,7 +530,6 @@ public:
     bool  ams_calibrate_remain_flag { false };
     bool  ams_auto_switch_filament_flag  { false };
     bool  ams_air_print_status { false };
-    bool  ams_support_use_ams { false };
     bool  ams_support_virtual_tray { true };
     int   ams_humidity;
     int   ams_user_setting_hold_count = 0;
diff --git a/src/slic3r/GUI/SelectMachine.cpp b/src/slic3r/GUI/SelectMachine.cpp
index c1c1044404..ad408a00be 100644
--- a/src/slic3r/GUI/SelectMachine.cpp
+++ b/src/slic3r/GUI/SelectMachine.cpp
@@ -3519,7 +3519,7 @@ void SelectMachineDialog::update_flow_cali_check(MachineObject* obj)
 
 void SelectMachineDialog::update_ams_check(MachineObject* obj)
 {
-    if (obj && obj->ams_support_use_ams && obj->has_ams()) {
+    if (obj && obj->has_ams()) {
         select_use_ams->Show();
         if (obj->get_printer_ams_type() == "generic") {
             img_use_ams_tip->Show();
@@ -3611,13 +3611,11 @@ void SelectMachineDialog::update_show_status()
 
     // do ams mapping if no ams result
     bool clean_ams_mapping = false;
-    if (obj_->has_ams() && m_ams_mapping_result.empty()) {
-        if (obj_->ams_support_use_ams) {
-            if (m_checkbox_list["use_ams"]->GetValue()) {
-                do_ams_mapping(obj_);
-            } else {
-                clean_ams_mapping = true;
-            }
+    if (m_ams_mapping_result.empty()) {
+        if (m_checkbox_list["use_ams"]->GetValue()) {
+            do_ams_mapping(obj_);
+        } else {
+            clean_ams_mapping = true;
         }
     }
 
@@ -3685,20 +3683,17 @@ void SelectMachineDialog::update_show_status()
         return;
     }
 
-    if (obj_->ams_support_use_ams) {
-        if (!m_checkbox_list["use_ams"]->GetValue()) {
-            m_ams_mapping_result.clear();
-            sync_ams_mapping_result(m_ams_mapping_result);
+    if (!m_checkbox_list["use_ams"]->GetValue()) {
+        m_ams_mapping_result.clear();
+        sync_ams_mapping_result(m_ams_mapping_result);
 
-            if (has_timelapse_warning()) {
-                show_status(PrintDialogStatus::PrintStatusTimelapseWarning);
-            }
-            else {
-                show_status(PrintDialogStatus::PrintStatusDisableAms);
-            }
-
-            return;
+        if (has_timelapse_warning()) {
+            show_status(PrintDialogStatus::PrintStatusTimelapseWarning);
+        } else {
+            show_status(PrintDialogStatus::PrintStatusDisableAms);
         }
+
+        return;
     }